What are you trying to do with them?
Even if they're insulated, the lids don't create much of an airtight seal, and the insulation is probably spray foam at best. All in all, they're likely to be equal to or less effective than a mediocre cooler.
If you're trying to keep ice in there for any extended period of time, I think you'll be pretty disappointed with the performance. Although they should be adequate for use as a fishbox for a day trip here and there.
Toss a bag or two of ice in there and see how long it lasts.